The road starts at the north eastern corner of Portugal. On the Portuguese side of the border the road is the IP-4 or European route E82 to Porto. The border is formed by the Rio Macãs it heads east crossing the Esla river to Zamora and the Duero river valley. The N-630 crosses to the north and south.

To the northeast the road crosses Sierra del Morto by the Puerto del Madro and then heads tharough the Sierra del Moncayo. The Parque natural de la Dehese del Moncayo lies to the east. The N-113 passes to the north. The road heads into the Ebro Valley passing the Monasterio de Veruela, overlooked by the Balcón de El Buste and the Santuario de Nuestra Sa de la Misericordia. The road ends at Junction 19 of the Autopista AP-68 and N-232 43 km north west of Zaragoza.